Dynamic tooltip

[cstrader232]

I have a tooltip defined for a datagridview cell. It displays when I hover the mouse over the cell. I'd like however to update the contents of that tooltip when it displays. How can I best do that? Is there a tooltip display event? The mousehover event doesn't seem to really work in this regard. Thanks

[dan sh]

I think there is show and/or popup event. Not sure though

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[cstrader232]

Or perhaps mousehover would work if I knew how to reset it once it fired once (without having to move the mouse outside of and then back into the DGV).

[Dave Kreskowiak]

If I get what you're talking about doing, there isn't an event like you're talking about. What you'd have to do is handle the DGV's CellMouseHover and probably CellMouseLeave events to interrogate the cell the mouse is over and set the ToolTip's Text property as the mouse moves.

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[cstrader232]

OK, well that made the whole thing painfully obvious -- just set the tooltip on the cellmouseenter event. DOH! Thanks

[Vengatachalapathy Palanivel]

You can make updatable tooltips by making use of the following steps using Javascript. For the first time, On mouse over event you can create a "DIV" control using "createElement" method with the respective text. Then, you can update the content of the "DIV" element innertext on mouse out event(you can hide this "DIV"). While creating the control make the "Control ID" uniform across all the cells, so that you don't need to recreate the control every time. If it's already there you can just make the display property to 'block' or else create the control newly. Hope this helps you.

Regards, Vengat P

[Dave Kreskowiak]

This won't work in a Windows Forms app, just web...

A guide to posting questions on CodeProject[^]
Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
     2006, 2007, 2008